This Sigma SA-E Mount Converter MC-11 is your perfect solution for using your Sigma SA-mount lenses on Sony E-mount cameras. With its open box, you can get the same quality as a brand new item at a lower price. This lens adapter is designed to maintain the full functionality of your lens, including auto-focus, while providing a seamless connection to your Sony camera. This converter is ideal for photographers who want to expand their lens selection without having to purchase new lenses. Its high-quality construction ensures that it will last for years to come, making it a wise investment for any photographer. So, if you're looking for a reliable and cost-effective way to use your Sigma SA-mount lenses on your Sony E-mount camera, this Sigma SA-E Mount Converter MC-11 is the perfect choice.